A method and apparatus for providing Quality of Service (QoS) gating and control as a function of quota consumption by a group of users is disclosed. A feedback mechanism for QoS gating and control with an Offline Charging System (OFCS) is also provided. In a packet telecommunication network, the Policy Charging and Control architecture is modified to include an Aggregation Interface Function that dynamically collects usage quantum for users in real time. The Aggregation Interface Function proactively seeks user group information and aggregates usage quantum over an entire group to prevent surprise overage charges at billing.